tofsee | 27d3458a7ed6711281cd23b81d30ca9989a794d6c43dc1e9e7b1a65c1519857e

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 10:19

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General

Target
f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe
Size 14.2MB
Sample240415-mcjb7acb34
SHA256 27d3458a7ed6711281cd23b81d30ca9989a794d6c43dc1e9e7b1a65c1519857e
MD5 f0d314f0095993e58ef3450fc29f91a8
SHA1 a93197f21d5c04a98be6ce7eb0295cb2bd6c2d1b
SHA512 f4485d7ae5d3bb2b77d6b9329d944b49edbe06f21369eaae966b6b20310824c12fd0d2bef3ddba1cc902b37e5e0d0585ee03adf0fcb1fc30bd368dff0139a187
SSDEEP 12288:35oxrglLhHuVQyksr86fNBj++++++++++++++++++++++++++++++++++++++++G:QrmLoT91B
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2164	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\bqhjbkjr\ImagePath = "C:\\Windows\\SysWOW64\\bqhjbkjr\\qqjwifeg.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1828	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2668	qqjwifeg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 1828	2668	qqjwifeg.exe	102

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4608	sc.exe
1732	sc.exe
928	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 3868	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	89
PID 1976 wrote to memory of 3868	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	89
PID 1976 wrote to memory of 3868	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	89
PID 1976 wrote to memory of 3308	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	91
PID 1976 wrote to memory of 3308	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	91
PID 1976 wrote to memory of 3308	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	91
PID 1976 wrote to memory of 928	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	93
PID 1976 wrote to memory of 928	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	93
PID 1976 wrote to memory of 928	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	93
PID 1976 wrote to memory of 4608	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	95
PID 1976 wrote to memory of 4608	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	95
PID 1976 wrote to memory of 4608	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	95
PID 1976 wrote to memory of 1732	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	97
PID 1976 wrote to memory of 1732	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	97
PID 1976 wrote to memory of 1732	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	97
PID 1976 wrote to memory of 2164	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	100
PID 1976 wrote to memory of 2164	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	100
PID 1976 wrote to memory of 2164	1976	f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe	100
PID 2668 wrote to memory of 1828	2668	qqjwifeg.exe	102
PID 2668 wrote to memory of 1828	2668	qqjwifeg.exe	102
PID 2668 wrote to memory of 1828	2668	qqjwifeg.exe	102
PID 2668 wrote to memory of 1828	2668	qqjwifeg.exe	102
PID 2668 wrote to memory of 1828	2668	qqjwifeg.exe	102

C:\Users\Admin\AppData\Local\Temp\f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bqhjbkjr\
  2⤵
  PID:3868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qqjwifeg.exe" C:\Windows\SysWOW64\bqhjbkjr\
  2⤵
  PID:3308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bqhjbkjr binPath= "C:\Windows\SysWOW64\bqhjbkjr\qqjwifeg.exe /d\"C:\Users\Admin\AppData\Local\Temp\f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bqhjbkjr "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bqhjbkjr
  2⤵
  - Launches sc.exe
  PID:1732
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  PID:2164

C:\Windows\SysWOW64\bqhjbkjr\qqjwifeg.exe
C:\Windows\SysWOW64\bqhjbkjr\qqjwifeg.exe /d"C:\Users\Admin\AppData\Local\Temp\f0d314f0095993e58ef3450fc29f91a8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1828

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

qqjwifeg.exe

Path C:\Users\Admin\AppData\Local\Temp\qqjwifeg.exe
Size 14.6MB
SHA256 5681aa490928cf58bc05630397d2b26abc72a0011b8d407798a0c5c5611afb77
MD5 8944edd8b65a8276f9d1dd1052104319
SHA1 6befe3a486c77bec07dc9e6322f661aeeac62c23
SHA512 8ee1be4e12d48db85c57bbb3c0a7874a065c49e69d5e4fba6e0fee626dca30afb4dbeccfba0e2b016967adcf54df8e56c7fa84356f83f0721ba2e5ed1ee1402c
SSDEEP 12288:W5oxrglLhHuVQyksr86fNBj++++++++++++++++++++++++++++++++++++++++X:ZrmLoT91B
MD5 SHA1 SHA512 SSDEEP

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memory/1828-16-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1828-18-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1828-12-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1828-17-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/1976-2-0x0000000003400000-0x0000000003413000-memory.dmp

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memory/1976-4-0x0000000000400000-0x0000000003250000-memory.dmp

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memory/1976-6-0x0000000000400000-0x0000000003250000-memory.dmp

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memory/1976-8-0x0000000003400000-0x0000000003413000-memory.dmp

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memory/1976-1-0x00000000032D0000-0x00000000033D0000-memory.dmp

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memory/2668-10-0x00000000032B0000-0x00000000033B0000-memory.dmp

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memory/2668-13-0x0000000000400000-0x0000000003250000-memory.dmp

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memory/2668-11-0x0000000000400000-0x0000000003250000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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